EP0335486A2 - Méthode optique d'enregistrement d'informations - Google Patents
Méthode optique d'enregistrement d'informations Download PDFInfo
- Publication number
- EP0335486A2 EP0335486A2 EP89301389A EP89301389A EP0335486A2 EP 0335486 A2 EP0335486 A2 EP 0335486A2 EP 89301389 A EP89301389 A EP 89301389A EP 89301389 A EP89301389 A EP 89301389A EP 0335486 A2 EP0335486 A2 EP 0335486A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- recording
- pulse
- auxiliary
- light pulses
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/0037—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/006—Overwriting
Definitions
- record marks are formed each by application of a writing light beam to the recording medium for a predetermined duration to cause the recording medium to melt at a portion applied with the writing light beam and become, after cooled, the first state.
- Recording on the recording layer 3 is generally carried out by using, as a laser beam source, a semiconductor laser 4 with a wavelength of 780 nm.
- Light beam from the semiconductor laser 4 is made parallel by a collimator lens 5, re flected by a polarizing beam splitter 6, passed through a quarter wave length plate 7, and finally focused by an objective lens 8 to form a circular spot 9 of approximately 1 ⁇ m in diameter, which is a limit on wave length, on the recording layer 3 of the optical disk 1.
- the wave length of a laser beam was 0.78 ⁇ m
- the ratio of the mark pitch and the wave length of the reading beam was about 1.2 times, and it was revealed that if the value of this ratio is either 1.2 or less, its effect on the read signal can be reflected.
- the spot diameter obtained when a laser beam is condensed up to the resolution limit can be supposed to be proportional to the wave length of the laser beam.
- Fig. 13 shows an example of a circuit structure
- Fig. 14 is its timing chart.
- the circuit structure is resemble to that shown in Fig. 5, and pulses having different pulse widths are generated using the difference in charging and discharging characteristic of two capacitors 67 and 73.
- Clock signal 35 of high order drives a switching circuit 64 through a flip-flop 63.
- Capacitor 66 is charged by a current passed through a resistor 67 from a power source "+V" and discharged through a discharging resistor 65 when the switching circuit 64 was driven. At this time, a potential signal 66S is inputted into a comparator 68.
- the method for concentrating the optical energy upon the beginning portion of a record mark such a method that the pulse interval and pulse width of a plurality of pulses are held constant and the pulse power at the beginning point of writing is set so as to be higher than that of successive pulses is available. In this case, symmetry of a recording mark can be improved.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP73610/88 | 1988-03-28 | ||
JP63073610A JP2625843B2 (ja) | 1988-03-28 | 1988-03-28 | 光学情報記録方法 |
JP80839/88 | 1988-03-31 | ||
JP63080839A JP2574379B2 (ja) | 1988-03-31 | 1988-03-31 | 光学的情報記録消去方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0335486A2 true EP0335486A2 (fr) | 1989-10-04 |
EP0335486A3 EP0335486A3 (fr) | 1991-10-23 |
EP0335486B1 EP0335486B1 (fr) | 1994-06-15 |
Family
ID=26414751
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890301389 Expired - Lifetime EP0335486B1 (fr) | 1988-03-28 | 1989-02-14 | Méthode optique d'enregistrement d'informations |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0335486B1 (fr) |
DE (1) | DE68916084T2 (fr) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0458975A1 (fr) * | 1989-12-20 | 1991-12-04 | Sony Corporation | Appareil d'enregistrement optique |
EP0594425A2 (fr) * | 1992-10-21 | 1994-04-27 | Nikon Corporation | Méthode et appareil de détermination de la condition d'émission d'un train d'impulsions/de la condition d'extinction du chauffage pour l'enregistrement optique, ainsi que méthode et appareil d'enregistrement optique |
EP0595626A2 (fr) * | 1992-10-28 | 1994-05-04 | Nikon Corporation | Méthode et appareil de détermination de la condition d'enregistrement lors de la reécriture sur disque magnétooptique, par la méthode d'interruption du chauffage ou la méthode des trains d'impulsions ainsi qu'appareil et méthode d'enregistrement |
EP0676079A1 (fr) * | 1992-12-24 | 1995-10-11 | Optical Disc Corporation | Procede et appareil de mise en forme d'onde pour enregistrement optique |
US5513167A (en) * | 1989-12-20 | 1996-04-30 | Sony Corporation | Optical recording apparatus |
EP0729144A1 (fr) * | 1995-02-21 | 1996-08-28 | Nikon Corporation | Dispositif d'effacement de données et dispositif d'enregistrement de données |
US5561642A (en) * | 1992-10-21 | 1996-10-01 | Nikon Corporation | Pulse train condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
EP0753847A2 (fr) * | 1995-07-10 | 1997-01-15 | Fujitsu Limited | Appareil d'entraînement de disque magnéto-optique permettant une opération de sur-écriture directe et une opération d'écriture après effaçage |
WO1998050912A2 (fr) * | 1997-05-01 | 1998-11-12 | Koninklijke Philips Electronics N.V. | Procede et appareil de gravure d'un support d'enregistrement optique |
US6804470B1 (en) * | 1997-03-04 | 2004-10-12 | Stuart Gary Mirell | Energy-depleted radiation apparatus and method |
US7274647B2 (en) | 2001-09-29 | 2007-09-25 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI251234B (en) * | 2001-09-29 | 2006-03-11 | Samsung Electronics Co Ltd | Apparatus for recording data on optical recording medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0218243A2 (fr) * | 1985-10-08 | 1987-04-15 | Matsushita Electric Industrial Co., Ltd. | Appareil d'enregistrement et de reproduction de signaux numériques |
EP0265971A1 (fr) * | 1986-10-31 | 1988-05-04 | Matsushita Electric Industrial Co., Ltd. | Procédé d'enregistrement d'information optique |
-
1989
- 1989-02-14 EP EP19890301389 patent/EP0335486B1/fr not_active Expired - Lifetime
- 1989-02-14 DE DE1989616084 patent/DE68916084T2/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0218243A2 (fr) * | 1985-10-08 | 1987-04-15 | Matsushita Electric Industrial Co., Ltd. | Appareil d'enregistrement et de reproduction de signaux numériques |
EP0265971A1 (fr) * | 1986-10-31 | 1988-05-04 | Matsushita Electric Industrial Co., Ltd. | Procédé d'enregistrement d'information optique |
Non-Patent Citations (1)
Title |
---|
Proceedings of SPIE: Optical Storage Technology and Applications vol. 899, 15 January 1988, Los Angeles, California pages 188 - 195; Akahira et al.: "Recent Advances In Erasable Phase Change Optical Disks" * |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0669612A3 (fr) * | 1989-12-20 | 1996-06-26 | Sony Corp | Appareil d'enregistrement optique. |
EP0458975A4 (en) * | 1989-12-20 | 1992-08-19 | Sony Corporation | Optical recording apparatus |
EP0669612A2 (fr) * | 1989-12-20 | 1995-08-30 | Sony Corporation | Appareil d'enregistrement optique |
EP0458975A1 (fr) * | 1989-12-20 | 1991-12-04 | Sony Corporation | Appareil d'enregistrement optique |
US5513167A (en) * | 1989-12-20 | 1996-04-30 | Sony Corporation | Optical recording apparatus |
EP0594425A2 (fr) * | 1992-10-21 | 1994-04-27 | Nikon Corporation | Méthode et appareil de détermination de la condition d'émission d'un train d'impulsions/de la condition d'extinction du chauffage pour l'enregistrement optique, ainsi que méthode et appareil d'enregistrement optique |
EP0594425A3 (en) * | 1992-10-21 | 1996-10-09 | Nippon Kogaku Kk | Pulse train condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
US5561642A (en) * | 1992-10-21 | 1996-10-01 | Nikon Corporation | Pulse train condition/heat shut off condition determination method and apparatus for optical recording, and optical recording method and apparatus |
EP0595626A3 (en) * | 1992-10-28 | 1996-08-21 | Nippon Kogaku Kk | Recording condition determination method and apparatus upon execution of over-write operation on magnetooptical disk by heat shut off method and pulse train method, and magnetooptical recording method and apparatus |
EP0595626A2 (fr) * | 1992-10-28 | 1994-05-04 | Nikon Corporation | Méthode et appareil de détermination de la condition d'enregistrement lors de la reécriture sur disque magnétooptique, par la méthode d'interruption du chauffage ou la méthode des trains d'impulsions ainsi qu'appareil et méthode d'enregistrement |
EP0676079A4 (fr) * | 1992-12-24 | 1995-11-02 | ||
EP0676079A1 (fr) * | 1992-12-24 | 1995-10-11 | Optical Disc Corporation | Procede et appareil de mise en forme d'onde pour enregistrement optique |
EP0729144A1 (fr) * | 1995-02-21 | 1996-08-28 | Nikon Corporation | Dispositif d'effacement de données et dispositif d'enregistrement de données |
US5717677A (en) * | 1995-02-21 | 1998-02-10 | Nikon Corporation | Data erasure device and data recording device using a clock signal |
EP0753847A3 (fr) * | 1995-07-10 | 1997-12-29 | Fujitsu Limited | Appareil d'entraínement de disque magnéto-optique permettant une opération de sur-écriture directe et une opération d'écriture après effaçage |
EP0753847A2 (fr) * | 1995-07-10 | 1997-01-15 | Fujitsu Limited | Appareil d'entraînement de disque magnéto-optique permettant une opération de sur-écriture directe et une opération d'écriture après effaçage |
US6804470B1 (en) * | 1997-03-04 | 2004-10-12 | Stuart Gary Mirell | Energy-depleted radiation apparatus and method |
WO1998050912A2 (fr) * | 1997-05-01 | 1998-11-12 | Koninklijke Philips Electronics N.V. | Procede et appareil de gravure d'un support d'enregistrement optique |
WO1998050912A3 (fr) * | 1997-05-01 | 1999-02-11 | Koninkl Philips Electronics Nv | Procede et appareil de gravure d'un support d'enregistrement optique |
US7295505B2 (en) | 2001-09-29 | 2007-11-13 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7280460B2 (en) | 2001-09-29 | 2007-10-09 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7274647B2 (en) | 2001-09-29 | 2007-09-25 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7301884B2 (en) | 2001-09-29 | 2007-11-27 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7313078B2 (en) | 2001-09-29 | 2007-12-25 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7336588B2 (en) | 2001-09-29 | 2008-02-26 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7388824B2 (en) | 2001-09-29 | 2008-06-17 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US7525890B2 (en) | 2001-09-29 | 2009-04-28 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
US8416665B2 (en) | 2001-09-29 | 2013-04-09 | Samsung Electronics Co., Ltd. | Method of and apparatus for recording data on optical recording medium |
Also Published As
Publication number | Publication date |
---|---|
DE68916084D1 (de) | 1994-07-21 |
EP0335486A3 (fr) | 1991-10-23 |
EP0335486B1 (fr) | 1994-06-15 |
DE68916084T2 (de) | 1995-02-16 |
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